Hello, forum! I have been working on a project that lets me debug analog and digital sensors for the NXT robotics system. During the development, I had the need to convert digital to analog signals that could be read by an ADC unit. I found it very difficult to find the information on the subject, and now that I've found it, I thought I might share some informational links for smoothing out PWM signals.
Note, I didn't write these.
Websites:
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/filcap2.html
Here's hoping that others can find the information on this topic more easily than I did.